US984351A - Pump. - Google Patents

Description

R. CONRADER.

PUMP.

APPLIUATION FILED MAY 17, 1910.

Patented Feb. 14, 1911.

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RUDOLPH CONRADER, OF ERIE, PENNSYLVANIA.

PUMP.

Specification of Letters Patent.

Patented Feb. 11,1-, 1911.

To all whom it may concern:

Ie it known Athat I, RUDOLPH Gommone, a citizen ot the United States, residing at Erie, in the county of Erie and State o't Pennsylvania, have invented new and useful Improvements in Pumps, oit which the following is a specification.

This invention relates to pumps, and consists in certain improvements in the construction thereof as will be hereinafter fully described and pointed out in the claims.

More particularly, the invention relates to pumps ordinarily used in Artesian wells, and pumps in which there are flexible cups, either for the plunger or :t'or packing for parts of vthe pumps. In the ordinary use of these pumps, it is frequently necessary to pull the plunger or other parts from the barrel, and where the pump has been in operation, there is above the plunger' a column of liquid of great height, thus exerting a tremendous pressure on the plunger. Vhen, therefore, the plunger reaches a point opposite the point between the working barrel and the tubing, the sides o't' the cup :flare out, catch the shoulder of the tubing and are destroyed. Not only this but portions of the cup are ordinarily thrown oft', and these are left in the well, and gettine' under the valves, often require a second piilling oit the valve to clear them, with the danger in the second pulling as in the first, el destroying the cups, and depositing the pieces of the cups in the well. The object of the invention is to prevent this.

The invention is illustrated in the accompanying drawings as follows:

Figure 1 is a central section of the pump on the line 1-1 in Fig'. 2, the plunger heing in elevation; Fig. 2 is a section on the line 2-2 in Fig. 1; Fig. 3 is a section on the line 3-*3 in Fig. 2, the plunger being also partly in section.

l marks the working barrel; 2 the standing valve; 3 the coupling at the top oit' the working barrel; and l the tubing secured into the coupling 3. The plunger 5 has the usual Vflexible cups 6. These are secured on a sleeve 7 extending longitudinally of the plunger, and supported by the nuts or collars 8. The parts so far described are of the usual construction.

At the top of the working barrel are arranged passages 9. These are formed by sawing slots as shown, the slots extending from the top or' the working barrel a distance downwardly somewhat greater' than the depth ot the cup so that when the cup is brought abreast of the slots, the liquid above the pl unger can pass through the slots and escape below, thus balancing the pressure above and below as the cup passes from the end ot thc working barrel up into the tubing. This balancing of the pressure prevents the outsprcading of the cup as herctoilore described. Any passage or by pass that will accomplish this purpose may be used, but I prefer the saw slot as shown.

Vhat I claim as new is:

1. In a pump the combination ot a tube having a longitudinal passage in the walls thereof and a llcxible cup for maintaining a column oi liquid in the tube, the sides of the cup and the length of the longitudinal passage being proportioned to permit et a movement o'lt the liquid through the passage past the cup when the cup is in position abreast the passage.

2. In a. pump the combination of a tube having' a longitudinal passage in the walls thereo'l extending `from the ends et the tube; a coupling arranged on said end of' the tube; a second joint oil tubing secured to the coupling; and a llexible cup for maintaining a column oli' liquid in the tube, the size of the cup and the length of the longitudinal passage being proportioned to permit ot a movement. et' the liquid through the passage past the cup when the cup is abreast of the passage.

8. In a pump, the combination of a tube having' a slot, extending lrom the top thereof downwardly in the tube; a flexible cup ttor maintaining a column of liquid in the tube, the size of the cup and the length of the slot being proportioned to permit ot a movement ol liquid through the slot past the cup when the cup is abreast the passage.

4t. In a pump, the combination of a working barrel having a longitudinal passage, extending 'from the top thereof downwardly; a plunger in the working barrel being formed with flexible cups. the length of the passage and the size of the cups being proportioned to permit et' a passage of liquid through the slot past the cups, when the cup is abreast the passage.

5. In a pump the combination of a working barrel having slots out from the top thereof downwardly; and a plunger in the working barrel having cups, the length of the slot and the cups being proportioneel to permit of the passage of liquid through the slots from above the cup' to below the cup, when the cup is brought abreast the slot.

In testimony whereof have hereunto set my hand 1n the pres-ence of two subscribing witnesses.

RUDOLPH CONRADER. Witnesses THOMAS C. MILLER, MARGARET M. BEIGLE.

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